MetadataAPICMUtility.cls

//Author- sunil Kumar
//@sunil02kumar
// skforce is namespace of my org.
public class MetadataAPICMUtility{
  public static boolean createCustomMetadata(){
        List<MetadataService.Metadata> allMetadataList = new List<MetadataService.Metadata>();
        MetadataService.MetadataPort service = createService();
        
        MetaDataService.CustomMetadata CMTRec = new MetaDataService.CustomMetadata();
        //fullname refer custom metadata name.unique name
        CMTRec.fullName = 'skforce__Configuration_Settings.ConfSetting1';
        CMTRec.description = 'Store Configuration settings';
        CMTRec.label = 'Configuration_settings1';
        CMTRec.protected_x = false;
        //now specify field values
        List<MetaDataService.CustomMetadataValue> CMFieldValues = new List<MetaDataService.CustomMetadataValue>();
        MetaDataService.CustomMetadataValue field1= new MetaDataService.CustomMetadataValue();
        field1.field='skforce__Help_Url__c';
        field1.value= 'https://www.sfdcstuff.com/search/label/Lightning';
        CMFieldValues.add(field1);
        
        MetaDataService.CustomMetadataValue field2= new MetaDataService.CustomMetadataValue();
        field2.field='skforce__Home_Page_URL__c';
        field2.value= 'https://www.sfdcstuff.com/search/label/Lightning';
        CMFieldValues.add(field2);
        CMTRec.values = CMFieldValues;
        allMetadataList.add(CMTRec);
        system.debug('*******allMetadataList:'+allMetadataList);
        List<MetadataService.SaveResult> results = service.createMetadata(allMetadataList);
        for(MetadataService.SaveResult result: results){
            system.debug('create custo metadata results success='+result.success);
        }
        return results[0].success;
    }    
    
}